[Users] Very bad write performance in VM (ovirt 3.3.3)

[ml ml]

Yes, the only thing which brings the wirte I/O almost on my Host Level is
by enabling viodiskcache = writeback.
As far as i can tell this is caching enabled for the guest and the host
which is critical if sudden power loss happens.
Can  i turn this is on if i have a BBU in my Host System?


On Sun, Feb 9, 2014 at 6:25 PM, Vijay Bellur <vbellur at redhat.com> wrote:

> On 02/09/2014 09:11 PM, ml ml wrote:
>
>> I am on Cent OS 6.5 and i am using:
>>
>> [root at node1 ~]# rpm -qa | grep gluster
>> glusterfs-rdma-3.4.2-1.el6.x86_64
>> glusterfs-server-3.4.2-1.el6.x86_64
>> glusterfs-fuse-3.4.2-1.el6.x86_64
>> glusterfs-libs-3.4.2-1.el6.x86_64
>> glusterfs-3.4.2-1.el6.x86_64
>> glusterfs-api-3.4.2-1.el6.x86_64
>> glusterfs-cli-3.4.2-1.el6.x86_64
>> vdsm-gluster-4.13.3-3.el6.noarch
>>
>
> Have you turned on "Optimize for Virt Store" for the gluster volume?
>
> -Vijay
>
>
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